# Proposed AD FAA-2005-23284: BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-12-09
- Products: BAE Systems
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 13, 2005, 70 FR 73665
- Comments due: January 12, 2006
- Became: [AD 2006-12-09](https://openairdocs.org/ad/2006-12-09)
- Docket: FAA-2005-23284 (https://www.regulations.gov/docket/FAA-2005-23284, where comments are filed)
- Project: 2005-NM-163-AD
- FR document: 05-23955
- Official PDF: https://openairdocs.org/files/sha256/87/cf/87cf44e679a53fcf215d7c7c3f4d1efea8281646257f6250d026caea97a18b8a (from https://www.govinfo.gov/content/pkg/FR-2005-12-13/pdf/05-23955.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/12/13/05-23955/airworthiness-directives-bae-systems-operations-limited-model-bae-146-and-avro-146-rj-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7596B0F0BB868BA8862570D60070C6DB.0001
- Page: https://openairdocs.org/proposed/FAA-2005-23284

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ airplanes. The existing AD requires one- time inspections of the inner webs and flanges at frames 15, 18, 41, and 43 for evidence of corrosion or cracking; and corrective actions if necessary. This proposed AD would instead require new repetitive inspections and expand the area to be inspected. This proposed AD would also expand the applicability and provide an optional action that would extend the repetitive inspection interval. This proposed AD results from a report indicating that in some cases the inspections required by the existing AD revealed no damage, yet frame corrosion and cracking were later found during scheduled maintenance in the two forward fuselage frames 15 and 18. We are proposing this AD to prevent reduced structural integrity of the airplane.

## Notices in this docket

- Dec 13, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-23955, comments due Jan 12, 2006 (https://www.federalregister.gov/documents/2005/12/13/05-23955/airworthiness-directives-bae-systems-operations-limited-model-bae-146-and-avro-146-rj-airplanes)

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